10... h7h6 An important move to prevent Ng5. 11. b2b3 White prepares the development of the bishop on b2—so far, all his moves are very natural. 11... c6c5 [%c_highlight c6;keyPressed;none;opacity;0.8;square;c6;persistent;false,d5;keyPressed;none;opacity;0.8;square;d5;persistent;false] This move is only the third most popular choice for Black, but it has been played by Firouzja before. Advancing the pawn to c5 is generally a difficult decision: on the one hand, Black gains the c6-square for a bishop or knight; on the other, the d5-square becomes available for the white knight. 12. f1d1  12... d8c8 